http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60063
Bug ID: 60063
Summary: -Wunused-local-typedefs warning despite attribute used
in a template
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gmail dot com
GCC 4.8.2 issues the following bogus warning on the defintion of Y in bar
despite attribute used. The same definition in an ordinary function emits no
warning.
$ cat t.cpp && g++ -Wunused-local-typedefs -c -o/dev/null t.cpp
template <class> struct S;
void foo (int i) {
typedef __attribute__ ((used)) S<int> X;
}
template <class T>
void bar (T i) {
typedef __attribute__ ((used)) S<T> Y;
}
t.cpp: In function ‘void bar(T)’:
t.cpp:9:41: warning: typedef ‘Y’ locally defined but not used
[-Wunused-local-typedefs]
typedef __attribute__ ((used)) S<T> Y;
^
